How can you design a webhook payload to handle optional fields without breaking clients expecting fixed keys?

hard📝 Application Q9 of 15

Rest API - Webhooks and Events

AAlways include optional fields with null values if missing

BInclude optional fields only when present, clients handle missing keys

CRemove optional fields completely from the payload schema

DSend optional fields as empty strings regardless of presence

Step-by-Step Solution

Solution:

Step 1: Understand client expectations
Clients expect fixed keys to avoid errors during parsing.
Step 2: Use null for missing optional fields
Including keys with null values keeps schema consistent and signals absence.
Final Answer:
Always include optional fields with null values if missing -> Option A
Quick Check:
Use null for optional missing fields to keep schema stable [OK]

Quick Trick: Use null for missing optional fields to avoid client errors [OK]

Common Mistakes:

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